Every holiday brings weekend sales, but some are better than others. If this coming Memorial Day weekend is anything like the last two, we might see some of the best discounts this year so far—particularly for clothing, but not so much for other categories.

Dealnews notes that half of the Memorial Day sales in 2010 and 2011 featured some of the best sales of the year, thanks to stackable coupons. Those "best of the year" offers for 30% to 50% off were mostly from clothing stores and home goods stores (e.g., Last Call Neiman Marcus and Pottery Barn).

On the other hand, it's best to wait for electronics and summer products like grills and patio furniture, the site predicts, because of better bargains coming later. (However, our Best Things to Buy in May guide suggests now might be a good time to shop garage sales or look in the clearance department for patio furniture). For a whole year's view of what to buy when, check out our full best time to buy article.